More than four days have passed since 2-year-old Julen Rosello slipped into a hole in the Spanish countryside, falling more than 30 stories and igniting a search-and-rescue effort that has consumed the country of 46 million people.

On Sunday, the boy’s parents said they heard the toddler’s echoing cries as he plummeted into darkness. The tragedy happened as the family of three — Julen, whose name has also been spelled “Yulen,” and his parents, José Rosello and Vicky García — was setting up for a paella picnic in Totalan, a small town on the southern coast of Spain, according to Britain’s Daily Express.

Since then, there has been nothing but agonizing silence. A growing team of rescuers — including experts who have helped retrieve trapped miners — has worked around the clock to find Julen, fighting difficult terrain, bad weather and, most of all, time.

On Wednesday, the boy’s father told reporters he was hoping against hope Julen would be found alive.

“We’re dead inside but with the hope we have an angel watching over us who is going to help him to come out alive as soon as possible,” José Rosello said, according to the Daily Mail.

On Thursday, rescue teams began digging two new tunnels, one vertical and another horizontal relative to the existing borehole where Julen is thought to be trapped, El Pais reported.

“The main thing is to reach the spot as soon as possible, via either one of the options,” engineer Juan López Escobar told reporters, according to the Spanish newspaper.

Escobar estimated such a project would usually take a month, but that all typical time frames had been thrown out the window because of the urgent situation.

“We’re working to do it as soon as possible because of the health of the child," he said, according to the Guardian.

Joining Guardia Civil, Spain’s national police force, are mine rescue experts from a region in northwest Spain, as well as Swedish experts who helped rescue 33 trapped Chilean miners in 2010, the newspaper reported.

Julen fell into a possibly unmarked hole bored by someone searching for a spot to dig a well, authorities have said. The hole is 360 feet deep, but only 15 inches at its widest spot — big enough for a toddler to slip into but not his parents or rescuers racing against a ticking clock.

Videos and photos of the scene showed harness-wearing rescue worker crawling into the mouth of the hole, supported by a cable.

Throughout the week, rescuers have recovered grim evidence the boy is somewhere in the hole — but not the boy himself. On Monday, a small robot lowered into the shaft recovered a bag of candy and a plastic cup Julen had been holding when he fell, but it was not able to capture any videos or sounds of the child.

On Wednesday, rescuers pulled up strands of his hair, according to the network Euronews. DNA tests confirmed that the hair belongs to Julen.

They remain blind to the deepest parts of the hole.

According to the Daily Mail, there is a blockage about 250 feet beneath the surface, perhaps caused by a mini landslide as the boy tumbled. Around that depth, the hole gets slimmer, too small for even the robot to get past.

Still, family members and rescue workers have continued to hold out hope the boy is alive, perhaps trapped in an air pocket. Dozens of people have appeared at the Totalan rescue site to display messages of support for the Rosello family. Some of the signs have read, “Hope,” “Solidarity" or, simply, “Julen.” Others were drawings by children who are not much older than the trapped boy.

Julen’s parents, whose first son, Oliver, died of a reported congenital heart defect at age 3, join a reluctant fraternity of families cast into the glare of international spotlight after their children were trapped below ground.

In 1987, 18-month-old Jessica McClure fell down a 22-foot hole in her grandmother’s backyard in Midland, Tex., and was stuck for 58 hours before rescuers were able to pull her out of the eight-inch-wide hole.

And last summer, the Wild Boars soccer team — 12 boys, none of whom could swim, and their 25-year-old coach — were rescued from a cave by divers who guided the 12-to-16-year-old boys through passages as narrow as a couple of feet.

In Spain this week, Julen’s parents, sequestered in a tent as they await news, are praying for his older brother to watch over him from heaven.

“Oliver, don’t forget your brother, Julen,” his mother wrote on social media, according to the Express. “You know we’ve been waiting for him for many hours. I know you protect him a lot, my little King.”

Later, she posted another picture of a sleeping baby: “If it’s true that there’s a God up there,” she wrote, “help him please.

“Hold on Julen.”

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